package demo1;

import java.util.ArrayList;
import java.util.List;
import java.util.Random;

public class Test {

    private static  final String[] SUITS = {"♥","♠","♣","♦"};

    public static List<Card> buyCard() {
        List<Card> cards = new ArrayList<>();

        for(int i = 0; i < SUITS.length; i++) {
            for(int j = 1; j <= 13; j++) {
                Card card = new Card(SUITS[i],j);
                cards.add(card);
            }
        }
        return cards;
    }

    //洗牌
    public static void shuffle(List<Card> cards) {
        Random random = new Random();
        for(int i = cards.size() - 1; i > 0; i--) {
            int j = random.nextInt(i);
            //交换
//            int tmp = [i];
//            [i] = [j];
//            [j] = tmp;

            Card tmp = cards.get(i);
            cards.set(i,cards.get(i));
            cards.set(j,tmp);

        }
    }

    public static void main(String[] args) {
        List<Card> cards = buyCard();
        System.out.println(cards);
        System.out.println("洗牌:");
        shuffle(cards);
        System.out.println(cards);

        //3个人，每个人轮流接5张牌
        List<Card> hand1 = new ArrayList<>();
        List<Card> hand2 = new ArrayList<>();
        List<Card> hand3 = new ArrayList<>();

        List<List<Card>> hand = new ArrayList<>();
        hand.add(hand1);
        hand.add(hand2);
        hand.add(hand3);

        for(int i = 0; i < 5; i++) {
            for(int j = 0; j < 3; j++) {
                //揭牌动作
                Card card = cards.remove(0);
                //放到指定人的手里
                hand.get(j).add(card);
            }
        }

        System.out.println("第1个人的牌：");
        System.out.println(hand1);
        System.out.println("第2个人的牌：");
        System.out.println(hand2);
        System.out.println("第3个人的牌：");
        System.out.println(hand3);
        System.out.println("剩下的牌：");
        System.out.println(cards);

    }
}
